Controllable fabrication of sulfur-vacancy-rich Bi2S3 nanorods with efficient near-infrared light photocatalytic for nitrogen fixation
Controllable fabrication of sulfur-vacancy-rich Bi2S3 nanorods with efficient near-infrared light photocatalytic for nitrogen fixation
复制标题
高效近红外光催化固氮可控制备富硫空位 Bi2S3 纳米棒
DOI：
10.1016/j.apsusc.2022.153205
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发表时间：
2022-04-02
影响因子：
6.7
通讯作者：
Zhang, Xiufang
中科院分区：
文献类型：
--
作者：
Lan, Meng;Wang, Yitong;Zhang, Xiufang
Herein, orthorhombic phase Bi2S3 nanorods with different concentration of sulfur vacancies (SVs) were controllably synthesized via a facile solvothermal strategy. Benefited from the high specific surface area, proper band gap, good reduction capacity and abundant SVs, the Bi2S3 nanorods exhibit remarkable photocatalytic nitrogen fixation performance. The ammonia yield of the sulfur-vacancy-rich Bi2S3-3 is around 51.04 mu mol g-1 h-1 under full solar irradiation. Moreover, Bi2S3-3 also responds sensitively to near-infrared (NIR) light, and the nitrogen reduction rate is 33.37 mu mol g-1 h-1. The superior photocatalytic performance of Bi2S3 is mainly attributed to SVs, which can absorb nitrogen and afford plentiful active sites to activate molecular nitrogen. Moreover, SVs also can trap the photoinduced electrons and contribute to the separation of the interfacial charge. This work provides a promising and sustainable defect-rich photocatalyst for the fixation of atmospheric nitrogen using solar energy.
